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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

Sialon结合SiC复合材料的制备与性能

都兴红; 隋智通; 张广荣; 张伟民   

  1. 东北大学材料与冶金学院; 沈阳110006
  • 收稿日期:1997-04-28 修回日期:1997-06-02 出版日期:1997-12-20 网络出版日期:1997-12-20

Preperation and Properties of Sialon Bonded SiC Material

DU Xinghong; SUI Zhitong; ZHANG Guangrong; ZHANG Weimin   

  1. School of Materials and Metallurgy; Northeastern University Shenyang 110006 China
  • Received:1997-04-28 Revised:1997-06-02 Published:1997-12-20 Online:1997-12-20

PDF (PC)

736

被引次数

37

摘要： 利用天然高岭土，通过碳热还原氮化法合成β-Sialon（Si3Al3O3N5）粉体，并制备出Sialon结合SiC复合材料，同时测定该材料的机械性能和热力学性能，Sialon结合SiC复合材料可在1550～1640℃烧结，烧结体的体积密度可达2．26g／cm3，三点抗弯强度42．0MPa，1200℃恒温20min后，经15℃冷水淬冷10次仍保持原有强度，1350℃空气流中灼烧失重率低于0．035％／cm2．

关键词: Sialon结合SiC, 碳热还原氮化反应, 烧结, 机械及热力学性能

Abstract: β-sialon powders (Si6-z AlzOzN8-z with z=3.0) were synthesized by carbothermal reductionand nitriding reaction. A sample of sialon bonded SiC was sintered at 1580～1640℃. Bulk densityof the sintered body was 2.26g/cm3, three pomt bending strength was 42.0MPa. The bendingstrength was still remained when quenching the sintered body at 1200℃ to cold water (15℃) 10times. Weight loss in flowing air at 1350℃ was less than 0.035%cm-2.

Key words: Sialon bonded SiC, carbothemal reduction and nitriding reaction, sintering, mechanical and thermal properties